@jamie_fleck , Onshape documents are like containers, in which they contains assembly, drawing and part studio tabs. Currently in Onshape document to document
referencing are not available. User can use and copy part studio of
different
document. This facility is not available for assembly and drawing. User
have to use
"copy to clipboard" option to copy the part studio and "paste tab"
option to paste in different document.In future
we will hope that this facility will also available for assembly and
drawing studio also.